SAR-ES energy certificate is a commodity digital certificate issued by SAR digital asset exchange entrusted by China Yueyang Petrochemical (Zhanjiang) Co., Ltd. It is mainly used for the company to engage in international crude oil and refined oil trade, expand market share, and seize the crude oil supply market in China and Asia. The trade behavior of SAR-ES counterparties is managed on the chain, which is convenient for SAR-ES energy certificate holders to obtain trade information. The SAR-ES energy certificate issuer, Yueyang Petrochemical, has completed the pledge guarantee and provided SAR-S gold certificate endorsement for the issuance and circulation of SAR-ES.